c# - 使用C#登录https站点

Question

我正在尝试编写一个小程序来登录 Verizon 网站，然后检查当月还剩多少分钟。我需要帮助弄清楚如何使用 C# 登录站点。我知道我需要使用 webrequest 来发布登录信息，但我不确定如何去做。带有登录表单的站点是 https://login.verizonwireless.com/amserver/UI/Login ，但我不确定必须将哪些信息发布到网站才能登录以及如何登录。以下是我找到的网站来源。如果有人能帮我弄清楚如何从 C# 程序登录，我将不胜感激。感谢您的帮助。

form method="post" autocomplete="off" action="https://login.verizonwireless.com:443/amserver/UI/Login" name="loginForm" id="loginForm" onsubmit="return disableBut();">
input type="hidden" name="realm" value="vzw" />
input type="hidden" name="goto" value="" />
input type="hidden" name="gotoOnFail" value="" />
input type="hidden" name="gx_charset" value="UTF-8" />
input type="hidden" name="rememberUserNameCheckBoxExists" value="Y" />
h2 style="padding-left:0px;">Sign In to My Verizon
div class="clear10"> /div>

Answer 1

首先，您遗漏了两个重要字段 :) 如果您查看 HTML，表单中还有两个附加字段 — IDToken1(即用户名)和 IDToken2(即密码)。

如果您将这些提供给 POST 请求，您应该取回一些 cookie，然后您可以在后续请求中使用这些 cookie。这些会将您识别为登录用户。

当然，由于我没有有效的登录信息，因此我无法对此进行全面测试，但这是一个开始:

class VerizonLogin
{
    CookieContainer Cookies = new CookieContainer();

    void Main()
    {
        Login("test","testpass");

        // Now the cookies in "Cookies" are all set.
        // Ensure you set CookieContainer on all subsequent requests
    }

    void Login(string username, string password)
    {
        var wr = (HttpWebRequest)WebRequest.Create("https://login.verizonwireless.com:443/amserver/UI/Login");
        wr.Method = "POST";
        wr.ContentType = "application/x-www-form-urlencoded";
        wr.Referer = "https://login.verizonwireless.com/amserver/UI/Login"; // my tests show this is needed
        wr.CookieContainer = Cookies;

        var parameters = new Dictionary<string,string>{
            {"realm", "vzw"},
            {"goto",""},
            {"gotoOnFail",""},
            {"gx_charset", "UTF-8"},
            {"rememberUserNameCheckBoxExists","Y"},
            {"IDToken1", username},
            {"IDToken2", password}
        };

        using (var requestStream = wr.GetRequestStream())
        using (var writer = new StreamWriter(requestStream,Encoding.UTF8))
            writer.Write(ParamsToFormEncoded(parameters));

        using (var response = (HttpWebResponse)wr.GetResponse())
        {
            // here you need to detect a correct login... this might be one of the cookies.
            // if incorrect throw an exception or something.
        }
    }

    string ParamsToFormEncoded(Dictionary<string,string> parameters)
    {
        return string.Join("&", parameters.Select(kvp => 
            Uri.EscapeDataString(kvp.Key).Replace("%20","+") + "=" + Uri.EscapeDataString(kvp.Value).Replace("%20","+")
        ).ToArray());
    }
}